Combined power and hand operated feed mechanism



Dec. 11, 1923.

W. F. GROENE COMBINED POWER AND HAND OPERATED 'FEED MECHANISM Filed Aug. 2, 1920 Z-Sheets-Sheet 1 avwaubz w anew:

Dec. 11 1923.

W. F. GROENE COMBINED POWER AND HAND OPERATED FEED MECHANISM Filed Aug. 2, 1920 2 Sheets-Sheet 2 Patented Dec. 11, 1923.

UNITED STATES PATENT OFFICE.

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ASBIGNOB, BY IEBNE ALSBIGRIENTS,

TO THE B. I, 1.131.081) mam TOOL COIPANY, O! CIHCIHIA'I'I, OHIO, A COB- OOIBIIIID rowan. AID HAND OPERATED rm maul-ran.

Application fled Angut i, 1080. Serial Io. 400,811.

Toallwhomitmayconcem."

Be it known that I, WILLIAM F. Gaomm, a citizen of the United States of America and resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful I'm rovement in a Combined Power and and Operated Feed Mechanism, of which the following is a specification.

An object of my invention is to provide a motor operated cross feed mechanism for advancing or withdrawing the tool rest and cutting tools used with machine tools, such as lathes, in which the o ration of the lever controlling the motor wi I automatically disengage the hand wheel when the motor is operative. This permits the useof a pilot type hand wheel.

Another object of my invention is to provide a device for the pur se stated that is sim la in construction an operation.

T ese and other objects are attained by the means described herein and disclosed in the accompanying drawin in which:

Fig. 1 is a fragmental ront elevation of a lathe upon which a device embodying my invention has been mounted.

Fig. 2 is a sectional view on line 2-2 of Fi 1, on a slightly reduced scale.

Eig. 3 is an enlarged end view of a slotted collar forming a detail of my invention.

I will show and describe m device as applied to the cross feed of a the.

The feed control lever A mounted upon the feed control lever shaft a is adapted to disengage the reciprocating or slidable clutch gear a. and the fixed or stationary clutch gear a. when moved from a neutral or normal osition. The reciprocating gear meshes wit the hand wheel shaft gear 6 mounted on the hand wheel shaft 6 upon which the hand wheel B is mounted. The stationar clutch gear a meshes with the cross fee shaft gear (2' mounted on the cross feed screw shaft (1 that is driven by the motor D. Therefor when the gears a and a engage, power from the hand wheel is transmitted to the shaft d and when disengaged the hand wheel cannot be moved by the shaft d. The cross feed control lever A 18 mounted upon the feed controllever shaft a and has a collar cam a fixedly mounted u n the sleeve a. formed on the lever A.

e collar a having a cam seat a in which the camp on the cam collar a. normally engages, 1s mounted on the sleeve a adjacent to the collar cam a and isfixed to the apron E. The sleeve (1 extends thru the front wall 6 of the apron E and abuts the collar bearin a mounted on the shaft a and upon w ich the are a, and a are mounted. The sleeve a so abuts the at a. A houlder a formed on the collar aring a abuts the gear a opposite to the abutement of the s eeve a thereupon. A shoulder (1 formed on the shaft a abuts the collar bearing a-i opposite to the abutment of the sleeve a thereupon. The shaft 0 adjacent to the shoulder a" extends thru the rear wall e of the apron E and has mounted upon it the spring a" one end of which abuts the wall e and the other end of which abuts the flan e a formed on the end of the shaft a. he slotted collar a substantially encases the reciprocating gear a and is secured to the apron E by means of the pin 6 en ging in rforation a" in the top of the co er a. he slot a in the collar (1. is disposed adjacent to the gear 12' mounted on the shaft 6 whereby the gears a and b may engage one another. An inwardly turned flange a" on the collar 0. engages the shoulder a. formed on the ar an whereby the car a is fixedly retaine between said col er and the wall e of the a mu. The flan e a on the collar 0; also a uts the gear fixedly mounted on the shaft at, said gear d engaging the gear a.

The hand wheel B is mounted on the hand wheel shaft 12 extending thru the apron E and having mounted upon it the hand wheel shaft gear I) engagin the reciprocating clutch ear a. An i561 gear I) is mounted on s aft 6 and engages the stationary clutch gear a The cross feed shaft 03 is mounted on the cross feed shaft (1 upon which the motor transmission ear d engaging the ear d ismounted; t e motor shaft ear being mounted on the motor sha d of the motorhlg. I h

A t ee-wa po e c in or reversin switch F enc sed withi d the housing f i% operated. by means of the rod f attached at one end to the lever A. When the lever A is in a normal or neutral ition the circuits in which the motor is interposed are open. 'When the lever A is moved in either a clockwise or counterclockwise direction from the neutral cs1- tion, a circuit embracing the motor is closed, one circuit causing the motor to operate in a given or forwarddircction, and the other circuit reversing the rotation of the motor,

The operation of my device is as follows:

When it is desired to drive the cross feed shaft by means of the motor the lever A is moved to either a forward or reverse position, as the case may he. Simultaneously with the closing of the switch, by means and a that serve as the driving and driven members respectively of a clutch. The motor D therefor o crates upon the tool carriage, not shown, y means of the gears 03 and 01 without actuating the hand wheel B. When the tool is approximately positioned by means of this rapid transverse feed, the lever A is moved to a neutral position. The spring a" then returns the parts to their normal positions. The shaft 22 upon which the hand wheel B is mounted is then employed to feed the tool-rest. The rotary motion of shaft 6 is transmitted to shaft d by means of the gear b engaging the gear a and gear a engaging gear 0. which in turn engages'gear' d mounted upon the shaft 013. The idler b is mounted on the shaft 5 and meshes with the ear a serving as a support, thereby avoi ing excess wear upon the gear a. The slotted collar a serves as an abutment against the gear a,

What I claim is:

1. The combination of a feed shaft, a feed shaft ar on the shaft, a motor operative upon t e shaft, a switch in the motor circuit, a hand wheel shaft, :1, hand wheel mounted on the hand wheel shaft, a hand wheel shaft gear mounted on the hand wheel shaft, la feed control shaft, a feed control lever mountedon the control shaft and adapted to operate the switch, and a clutch on the control shaft adapted to be actuated by the control lever an normally having its driving and driven members in engagement, said driving and driven members engaging the hand wheel shaft gear and the feed shaft gear res ctively.

2. The combination of a eed shaft, a feed shaft gear on the shaft, a motor operative upon the shaft, 2. switch in the motor circuit, a hand wheel shaft, a hand wheel mounted on the hand wheel shaft, a hand wheel shaft gear-mounted on the hand wheel 'mal tarmac shaft, av feed control shaft, a feed control lever mounted on the control shaft and adapted to operate the switch, a clutch operative upon the gears, andmeans mounted on the feed control shaft adapted to yieldingly hold the clutch members in their norositions.

he combination with a feed shaft, of a motor operative upon the feed shaft, a hand wheel normally operative upon the feed shaft, a normally open switch in the motor circuit, a lever adapted to disconnect the hand wheel and feed shaft, and a rod mounted on the lever and adapted to close the switch.

at. The combination with a feed shaft, of a motor operative upon the feed shaft, a normally open switch in the motor circuit, a hand wheel, a clutch having its driving and driven members normally in en agement, means to transmit the movement of the driving and driven members of the clutch to the hand wheel and feed shaft respectively, means to disengage the clutch members, and means to close the switch simultaneously gith the disengagement of the clutch memers.

5. The combination with a feed shaft having a power operated means operative u on the shaft, of a feed shaft gear menu on the shaft, a hand wheel shaft, :1. hand wheel and a hand Wheel shaft gear mounted on the last, mentioned shaft, a feed control shaft, a clutch on the feed control shaft and having its driving and driven members in driving engagement with the gears on the hand wheelshaft and the feed shaft respectively, and a control lever mounted on the feed control shaft and adapted to simultaneously cause the power means to operate upon the feed shaft and to disconnect the drivingand driven members of the clutch.

6. The combination with a feed shaft having a power operated means operative u on the shaft, of a feed'shaft ear mounted on the shaft, a lever control s aft, a shoulder on the control shaft, a collar bearing mounted on the control shaft and abutting the shoulder, a shoulder on the bearing, a fixed gear revolubly mounted on the collar bearin and feed shaft car, a second gear mounts on the collar earin and abutting the shoulder on the bearlng, a control 'lever mounted on the control lever shaft, a sleeve on the lever abutting the collar bearing and the second mentioned gear mounted on the collar bearing, a fixed collar slida'bly mounted on the sleeve and having a cam seat therein, a cam collar fixedly mounted on the sleeve, a cam on the cam collar normally engaging in the cam seat referred to, the are on the collar bearing being normally a apted to engage, yielding means adapted normally to return the parts to their normal positions, a. manually operated gear engag- III ing the second mentioned gear on the collar bearing, and means causing the power operated means to operate the feed shaft when the cam is unseated.

7. A transmission device comprising an apron having a front and rear wall, a control shaft extending thru the apron Walls and having a shoulder thereon, a flange on the shaft, a control lever mounted on the control shaft, a sleeve on the lever extending thru the front apron wall, a collar havin a cam seat mounted on the sleeve and a xed to the front apron wall, a cam collar fixedly mounted on the sleeve, a cam on the cam collar normally engaging in the cam seat, a collar bearing mounted on the control shaft and having its ends abutting the shoulder on the control shaft and the sleeve, a shoulder on the collar bearing, a slidable gear mounted on the collar bearin and a'buting the shoulder on the bearing and the sleeve, a slotted collar secured to the apron and substantially encasin the slidable gear, a fixed gear mounted sli ably upon the collar bearmg and abutting the rear wall of the apron and the slotted collar, a spring mounted on the control shaft and abutting the rear wall of the apron and the flange on-the control shaft, the gears being adapted to transmit motion to one another when in engagement, both gears being adapted to engage gears mounted on adjacent shafts.

8. The combination with a feed shaft, of a hand wheel normally operative on the shaft, a reversible motor mechanism operable upon the shaft and normally inoperative, and means for selectively actuating the motor mechanism and for simultaneously disconnecting the hand wheel.

9. The combination of a feed shaft, a manually operative means adapted to actuate the feed shaft, an electric motor in driving engagement with the feed shaft, an electric circuit adapted to embrace the motor, and means to simultaneously close the electrical circuit and disengage. the manually operative means from the feed shaft.

In witnem whereof, I have hereunto subscribed my name this 28th da of Jul 1920.

WILLIAM .GRO NE. 

